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Finding the Fourth Proportional to 335.99, 503.98 and 130.70

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Solution

The fourth proportional to 335.99, 503.98 and 130.70 is: 196.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.99 : 503.98 = 130.70 : x
  2. Step 2: Convert to fraction form
    335.99/503.98 = 130.70/x
  3. Step 3: Cross multiply
    335.99x = 503.98 × 130.70
  4. Step 4: Simplify right side
    335.99x = 65,871.14
  5. Step 5: Solve for x
    x = 65,871.14/335.99
  6. Step 6: Final answer
    x = 196.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.